Shell collapsar

A shell collapsar is a hypothetical compact astrophysical object, which might constitute an alternative explanation for observations of astronomical black hole candidates. It is a collapsed star that resembles a black hole, but is formed without a point-like central singularity and without an event horizon. The model of the shell collapsar was first proposed by Trevor W. Marshall and allows the formation of neutron stars beyond the Tolman–Oppenheimer–Volkoff limit of 0.7 M☉.

Shell collapsar

A shell collapsar is a hypothetical compact astrophysical object, which might constitute an alternative explanation for observations of astronomical black hole candidates. It is a collapsed star that resembles a black hole, but is formed without a point-like central singularity and without an event horizon. The model of the shell collapsar was first proposed by Trevor W. Marshall and allows the formation of neutron stars beyond the Tolman–Oppenheimer–Volkoff limit of 0.7 M☉.